The airline workers, many based in Fort Lauderdale, said they were sad and angry and fearful after the budget carrier ceased operations over the weekend.

After Spirit Airlines shutters operations, other discount airlines move quickly to add new routes from Fort Lauderdale.

Southwest Airlines honors Captain John Jackson, a retiring Spirit pilot whose final flight was canceled due to the shutdown.

Transportation Secretary Sean Duffy announced a number of relief measures for Spirit Airlines customers and employees on Saturday. The four major U.S. airlines — United, Delta, JetBlue and Southwest — "are all capping ticket prices specifically for Spirit customers who now need to rebook canceled flights,

Spirit Airlines announced it is going out of business after 34 years, saying Saturday it has started winding down operations.

JetBlue offers $99 rescue fares to stranded Spirit Airlines customers and expands service in Fort Lauderdale and San Juan after Spirit's shutdown.

Transportation Secretary Sean Duffy said the Trump administration has prepared for Spirit Airlines to shut down. Duffy said the airline’s decision came down to a “creditor issue.”